A device that produces electricity by tgbf zh ;wtv(x/ii; 4w;ransforming chemical energy into electrical energy is call/;bv;f ztw(wgi 4hi;xed a

  A car battery

  The total amount of charge that passes through a wire's full crm 7 ,xosqh3(omoss section at any point per unit of time is referrmo3(,ms 7q oxhed to as

  The direction of convention curren)e)rx(yoyu a 9v;bg4 nt is taken to be the direction that

  A coulomb per second is the m9oea 0x+.qnrsame as

  Car batteries are rated in "amp- kxcn8 .-u-psmhours." This is a measure of their

  The resistance of a wire o1bzxby fe,hfb 5/2) qis defined as

  What is $1 \; \Omega$ equivalent to?

  The resistance of a wii *j 62 nzlpcfi-.d-jyre is

  The resistivity of a ;6r1 d65wz agbnzad(twire depends on

  Which conducting material* w8uileqeao nwn981* has the lowest resistivity value?

  Consider two copper wires. One has twicne ui;n+yt.f 9e the length of the other. How do the resistivities of thifu9; n n.+tyeese two wires compare?

  Consider two copper wires. q q2rdq g rzv 46mf2wndg;9.o;One has twice the length of the other. How do the resistances of these two wiz og.qqf4r wd6 q;9r22gmvd; nres compare?

  Consider two copper wires. Onzmg vnps; k-r;fb1z8 9e has twice the cross-sectional area of the other. How do tszzb-9g m;pf;rv 18 knhe resistances of these two wires compare?

  Consider two copper wires. One has twice cfe)w - tp be2wcy3d y27r*bob-y.5rb the length and twice the cross-sectional area of the other. How do the resistances of these 57w w-f - cd.2byep yyre* 3cr)2bbbottwo wires compare?

  The length of a wire is doubled and the radius is double7 41qvd:r oqkqd. By what factor does the resistance cha471rd oq:k qqvnge?

  How much more resistance does a 1.0 cm diametahzey x sn2(3+er rod have compared to a 2.0 cm diameter rod of the same length and made s2zhe+ a( nxy3of the same material?

  The resistivity of most common metalsj rt m uzv v6dp+gmw(,8f1/v zd4l-0ew

  Negative temperature coefficients ofj mdf3o /x dz,d4 4mlpj219lmr resistivity

  What is 1 W equivalenpcn4f 4elmx,:wc q4 j7t to?

  A kilowatt-hour is equiufd,:nt6 ok ai2 /6rodvalent to

  If the resistance in a constant voltaxsj(d b 2k faqbl1;-2pge circuit is doubled, the power dissipated by that circ-l2jfk2x a(bd1b;s qp uit will

  If the voltage across a circuit of constant mfewq 8vm9v*k,r6pz/oc q /9qresistance is doubled, the power dissipated by that circ *mqw6zfvqv99 kcpore,//8 m quit will

  If the resistance in a circuit witcr2 ocyj;:7x q1r;ciuh constant current flowing is doubled, the power dissipated by that circuit wj1q7;c ic ;or2y rucx:ill

  If the current flowing through a circuit of constant ress5xf5h-1c 1nsb-zjhl istance is doubled, the power dissipated b jbsfzl5n-1 xh-sc5h1y that circuit will

  During a power demand, the voltage output is reduced by 5.0%. By what percenta 1ugn wn/we v61.u,nplge is the power on a resistoupun w 16 /gel1nnv.w,r affected?

  A current that is sinusoidal with respect to bcj (rmkg ph3s 46;qjpt5 ma8/time is referred to as

  Consider two copper wires each carrying a current of 3.0 A. One wi 64uyvfcn7d7onwl6. mre has twice the diameter of the other. The ratio of the drift velocity in the smaller diameter wire to that in the larger diameter wirn7dcy u46vo6n m .w7fle is

  Materials in which the resistivityu:n ) pv o1bt fjmrk hnr, e(a*/u16mwei5a1)v becomes essentially zero at very low temperatures are reuab1rr)o1nphji,5e mm1we) k/ v6(: f*un vat ferred to as

  What current is flowing ifbh+*cl ;l/x2t(;k tvrm .bicw 0.67 C of charge pass a point in 0.30 s?

  A charge of 12 C passes through an electroplating appt kow38ckhe* 06ukh5garatus in 2.0 min. What is the ave hc k3k5owg8tke06h*urage current?

  How much charge must pass by a point in 10 s for ty+ w +/bu5vpkzhe current to be 0.50 A?

  A total of $2.0 \times 10^{13} \; protons$ pass a given point in 15 s. What is the current?

  What current is flowin:i.6hg r ips ;ja5,2oolvo4zkg if $4.0 \times 10^{16} \; electrons$ pass a point in 0.50 s?

  If $3.0 \times 10^{15} \; electrons$ flow through a section of a wire of diameter 2.0 mm in 4.0 s, what is the current in the wire?

  A coffee maker, which draws 13.5 A of current, has been left on for 10 min.t*.:v l dbxhx x.j2h:w What is the ne.x jd.vw:*xtb:h lxh 2t number of electrons that have passed through the coffee maker?

  In an electroplating process/:e6av b o 9niwpo3*js, it is desired to deposit 40 mg of silver on a metal part by using a current of 2.0 A. How long must the current be allowed to run to deposit this much silver? (The silver ions are singly charged, and the vw6oobae9 i:/j psn* 3atomic weight of silver is 108.)

  What potential difference is required to cause 4. j li;y*1omylh+ed51m 00 A to flow through a resistance of 330 Wlliyo ;*+j1 yem1hm5d ?

  What is the voltage across a 5.0-W resistor if the current through i 1/4rqlemjs7i t is 5.0 A?

  A 4000-W resistor is connenyv7i q.xt:ixix+h 5(cted across 220 V. What current will flow?

  A light bulb operating at 110 V draws 1.40 A of current. What is its resco 9zd).skch +fa*s0uistance9uhafk *csz.od0s c)+?

  A 12-V battery is connected to a 100-W resistor. How many electronfpe58 lzf5oovph:sn)ngm, b 3,k5m3 ks flow through the wireeo fs5fo3 :h,bmvlpzkn ) 8mn5k ,g35p in
1.0 min?

  What is the resistance of 1.0 m copper wire of diameter 0.40 inch? (The res,gcybo 1p2 k /(r3hu h3zbq1tnistivity of h,c3qbhy(1r2uz 1npt/k b g3ocopper is $1.68 \times 10^{-8} \; \Omega \cdot m$.)

  What is the resistance of a circular rod 1.0 cm in diameter and 45 m long, i -(-iv,xlmgw t,u)o zvf the resistivity is -vg(, ) zmtux-o iwl,v$1.4 \times 10^{-8} \; \Omega \cdot m$?

  What length of copper wg /km8gend7t5ndc96r ire (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) of diameter 0.15 mm is needed for a total resistance of $15 \; \Omega$?

  A 120-m long copper wire 4 eko:i,qnl--,czn r rujpy0; (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) has resistance $6.0 \; \Omega$. What is the diameter of the wire?

  A 1.5-cm square rod, 4.0 m long, measi/0mq7aypw rrmsl 2)2 ures 0.040 ohms. What is its resistivity?

  Calculate the current through a 10.0-m long 22 gaug six,.47arttzpui :ss9a. fe+ e (the radius is 0.321 mm) nichrome wire if it is connected to a 12.0-V battery. (The resistivity of ni.rfas 7pi uz:tea4xs+ 9,.t sichrome is $100 \times 10^{-8} \; \Omega \cdot m$.)

  A heavy bus bar is 20 cm long and of rectangular cross-section, 1.0 cm rd4q9ezesb6 4x 2.0 cm. What is the voltage drop along its length when it carries 4000 A? (The resistivity of copper dq4be 4rze9s6 is $1.68 \times 10^{-8} \Omega \cdot m$)

  A 1.0-m length of nichrome wire has a radius of 0.50 mm and a res3pbv b1i 4:onsistivity of $100 \times 10^{-8} \; \Omega \cdot m$. If the wire carries a current of 0.50 A, what is the voltage across the wire?

  A 1.0-mm diameter copgc/fo +rwv0z,per wire (resistivity $1.68 \times 10^{-8} \; \Omega \cdot m$) carries a current of 15 A. What is the potential difference between two points 100 m apart?

  A carbon resistor has a resistanc1m g):k qsgbiod (-d5ye of $18 \Omega$ at a temperature of $20 ^{\circ}C$. What is its resistance at a temperature of $120 ^{\circ}C$? (The temperature coefficient of resistivity for carbon is $-5.0 \times 10^{-4} /^{\circ}C$.)

  The temperature coefficient of resistivity m 5i)1qa9uh l7,iuige of platinum is $3.9 \times 10^{-3} /^{\circ}C$. If a platinum wire has a resistance of R at room temperature ($23 ^{\circ}C$), to what temperature must it be heated in order to double its resistance to 2R?

  A platinum wire is usexybrx6 w8h2 ai ct)pcyavw9:io887 .od to determine the melting point of indium. The resistance of tx.t 8b6c2y rxi89wa8ha:vioco)y 7wphe platinum wire is $2.000 \; \Omega$ at $20 ^{\circ}C$ and increases to $3.072 \; \Omega$ as indium starts to melt. What is the melting point of indium? (The temperature coefficient of resistivity for platinum is $3.9 \times 10^{-3} /^{\circ}C$.)

  5.00 A is flowing through an iq /;i+(sseh01nv k/u/asdd w$10.0 \; \Omega$ resistor. How much power is being dissipated?

  A 110-V hair dryer is rated at 1200 W. What cu* xb,q1w )5pzj pjto(rrrent will it draw?

  A 150-W light bulb running on 110 z./wt 3 qba mrj mpo;na-358ufbz;s*bV draws how much current?

  What is the nominal resistance of a 100-W light bujy8a r4 u7-o2dnmqx4 xn/ eg-dlb designed to be used in a 120-V circui -xn7ng4j 4/ead28um-ry o qxdt?

  A toaster is rated 800 W a-7j* o:vx9jfy h2nxant 120 V. What is the resistance of its heating elementx 7jo2f: x*vjnahy n-9?

  A 200-W resistor is .v (ph d 370nbrwj7wjerated at $1/4 \; \Omega$. What is the maximum current it can draw?

  A 200-W resistor is rated1tz j1djp(+iy8(v fgk f9b3/oqt0d j i at $1/4 \; \Omega$. What is the maximum voltage?

  A lamp uses a 150-W bulb. If it is used at 120 V, what current doiqix6h7a 6l mg0y.h k;1vay- ges it draw?

  A lamp uses a 150-W bu /;n8py6dqgap lb. If it is used at 120 V, what is its resistance?

  A 25-W soldering iron runs on 110 V.uj:u,+zb:x+ rdu97e9vw qwgj What is its resistance?

  How much does it cost to operate a 25-W soldering iron for 8.0 hours, if energy /tvd g i i(p0;j+ux-g1h i4qgr dx5vi7costs q7 xhupx-idj/ ii(5tr i v+ 4;0vg1gdg$0.08/kWh?

  How much energy doesp0 o1* aq pzw.njc:5br a 100-W light bulb use in 8.0 hours?

  A 1500-W heater is cqkpcb/j.qg9-zy+mtgn6f*-/a xm)g xonnected to a 120-V line for 2.0 hours. How much heat energy is t+/jqa/*g-bgf c-mxmx9.znyq6k) gp produced?

  A battery is rated at 12 V and 160 A-h. How much energy does thkk y5qm )4cot+e battery store?yo+t q)m5kk 4c

  How much energy does a 25-W soldering iron use in j 6ktk3w4jszq,( , (cnchaa3e8.0 hours?

  A 100-W driveway light bulb is on 10 hours per3tkawjt:ac :cc7ucx4 /6nut: day. Assuming the power company charges 10 cents for each kilowatt-hour of electricity used, estimate :atwxn4jctc6 kc/c ua :u:3t 7the annual cost to operate the bulb.

  A 400-W computer (computer plus monitor) is turned on 8.0 hours per d2a 4timfi92o3ap/chx6gsz/ x/6es vr ay. If electricity costs 10 cents per kWh, how much does it cost gix4mz/v atepc2sfi96a/6x32 /oshr to run the computer annually?

  The monthly (30 days) electric b tr9 -ngepx899e,4m knsb8mhr ill included the cost of running a central air-conditioning unit for 2.0 hr/day at 5000 W, and a series connection of ten 60 W light bulbs fon h,8sg9 e9rm8 bxpmr4kt9n-er 5.0 hr/day. How much did these items contribute to the cost of the monthly electric bill if electricity costs 8.0 cents per kWh?

  The heating element in an electric drier operates on 240 V and gsb 0suejm0 6th*,d qq(enerates heat at the rate of 2.1 kW. The heating element shorts out and, in repairing it, the owner shortens the Nichrome wire by 10%. (Assume the temperature is unchanged. In reality, the resistivity of the wire will depend on its temperaturd6um0(t0qs,j q es *hbe.) What effect will the repair have on the power dissipated in the heating element?

  14 A of current flowr0yj:j zv95msyh v e(ef(q0yz3i: zo2s through $8.0 \; \Omega$ resistor for 24 hours. How much does this cost if energy costs $0.09/kWh?

  A 9.0-V battery costs mbnv+w2 ,4zko2 qmtk;$1.49, and will run a portable CD player for 6.0 hours. Suppose the battery supplies a current of 25 mA to the player. What is the cost of energy in dollars per kWh?

  A motor that can do work at the rate of 2.0 hp has 60% efficiency. How mu5q ;i3 0)di)knnep dmwch current does it d0ni p;e)m d 5)3idqwknraw from a 120-V line? ($1 \; hp = 746 \; W$)

  A 500-W device is connected to a 120-V ac power source. What rmsa 4gs()uucvs jw. r(6k current flows thru6ra(s( gwu .c)s4kvjough this device?

  A 500-W device is connected to a 120-V3gcc h4txh7l; zx02yz ac power source. What peak current flows throuh32z;x4c0glxh7tcy z gh this device?

  A 500-W device is connected to ce xbte- .4(v3o)tm yha 120-V ac power source. What is the peak voltage across this dctyme xe(obvh-3. 4t)evice?

  The diameter of a copper wire is 0.081 inch.h( j dqwy; a3gooxz4)5 The maximum safe current it can carry (in order to prevent fire danger in building construction) is 20 A. At this current, what is the drift velocity of the electrons? (The number of electron carriers in one;5x3)oazhw(o 4qj gdy cubic centimeter of copper is $8.5 \times 10^{22}$.)